# Python Fastapi Scalable API Cursorrules Prompt Fil Cursorrules

> Apply for python-fastapi-scalable-api-cursorrules-prompt-fil. --- description: Applies general coding style and structure rules for Python code in the backend. globs: backend/src/**/*.py

- Skill: `diegosouzapw/python-fastapi-scalable-api-cursorrules-prompt-fil-cursorrul` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add diegosouzapw/python-fastapi-scalable-api-cursorrules-prompt-fil-cursorrul`
- Raw SKILL.md: https://api.skillmd.com/api/skills/diegosouzapw/python-fastapi-scalable-api-cursorrules-prompt-fil-cursorrul/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: diegosouzapw (https://skillmd.com/u/diegosouzapw)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/diegosouzapw/python-fastapi-scalable-api-cursorrules-prompt-fil-cursorrul

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# python-fastapi-scalable-api-cursorrules-prompt-fil

---
description: Applies general coding style and structure rules for Python code in the backend.
globs: backend/src/**/*.py
---
- Expert in Python, FastAPI, scalable API development.
- Write concise, technical responses with accurate examples in Python.
- Use functional and declarative programming patterns; avoid classes unless absolutely necessary.
- Prefer iteration and modularization over code duplication.
- Use descriptive variable names with auxiliary verbs (e.g., `is_active`, `has_permission`).
- Follow proper naming conventions: use lowercase with underscores (e.g., `routers/user_routes.py`).
- Use `def` for pure functions and `async def` for asynchronous operations.
- Use Python type hints for all function signatures. Prefer Pydantic models for input validation.
- Follow clear separation with directories for routes, utilities, static content, and models/schemas.
- Use the "Receive an Object, Return an Object" pattern.
- Handle errors at the beginning of functions with early returns.
- Use guard clauses and avoid deeply nested if statements.
- Implement proper logging and custom error types.